Week 1. Radiation – Breathing & Trembling Sphere Problem
- What happens if we have a certain discontinuity that is a function of three spatial variables (e.g. x,y,z for Cartesian coordinate)?
- What are the radiation characteristics of a breathing sphere, which is assumed to vibrate omni-directionally with equal magnitude?
- What is the difference between a breathing sphere and a trembling sphere, which vibrates in a certain direction with a uniform velocity?
Week 2. Radiation – Baffled Piston & Finite Vibrating Plate Problem
- How can we generate sound? By the fluctuation of fluid particles or the vibration of structures? How are they related?
- How can we understand the radiation of a finite vibrating plate? Can we assume this plate as numerous vibrating pistons?
Week 3. Scattering & Diffraction / Kirchhoff-Helmholtz Equation
- How can we express the wave propagation when it is reflected due to the presence of discontinuities in space?
- How can we explain the circumstances under which we can hear sound but cannot see the sound source?
- What is the relation between the wavelength and the diffraction?
Week 4. Wave Propagation in Space / Reverberation Period and its Design Application
- If there are different types of impedance distribution in space, how can we explain the propagation characteristics?
- How can we acoustically define ‘large’ or ‘small’ space’? Is it related to the frequency?
- Is there any measure that can represent the characteristics of the space?
Week 5. Wave
Propagation in Space / Duct Acoustics
- How can we express the sound field that is neither fully diffuse field nor only a direct field?
- When the size of the space is small relative to wavelength, what happens to the propagation of sound?
- When the length of one direction is significantly greater than the cross-sectional direction of the space, how does the wave propagate with respect to its wavelength?
Coursera est une entreprise numérique proposant des formation en ligne ouverte à tous fondée par les professeurs d'informatique Andrew Ng et Daphne Koller de l'université Stanford, située à Mountain View, Californie.
Ce qui la différencie le plus des autres plateformes MOOC, c'est qu'elle travaille qu'avec les meilleures universités et organisations mondiales et diffuse leurs contenus sur le web.